Biology

Endocrine and Exocrine Glands

690 Questions

The endocrine and exocrine glands topic explores the human body's essential secreting structures, including the pituitary, thyroid, and salivary glands. Questions often focus on gland locations, their specific secretions, and crucial physiological functions. This subject is a core component of the general science syllabus across many highly competitive examinations.

Master endocrine glandsPituitary gland locationSalivary gland functionsThyroid and ductless glandsApocrine sweat glands

Endocrine and Exocrine Glands Questions

Multiple choice

Which of the following are external glands?

  1. Brunner's glands

  2. Crypts of Lieberkuhn

  3. Parotid salivary glands

  4. Gastric glands
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Parotid salivary glands are present below and front of each ear and secrete their secretion via ducts in buccal cavity, i.e. they are exocrine glands. As they are outside buccal cavity, thus they are called external glands.

Multiple choice

Which is the largest gland present in the human body?

  1. Salivary gland

  2. Brunner's gland

  3. Pancreas

  4. Liver
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is approximately 21-22.5 cm across its widest point, 15-17.5 cm at its greatest vertical height, and 10-12.5 cm from front to back. It is the largest gland present in the body.

Multiple choice

Which of the following glands is known as mixed gland?

  1. Liver

  2. Pancreas

  3. Salivary gland

  4. Thyroid gland
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is correct as pancreas has both endocrine and exocrine parts. Lobules form the exocrine part and islets of Langerhans form the endocrine part.

Multiple choice

Nuhn’s glands are related with the

  1. tongue

  2. ear

  3. hairs

  4. nose
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nuhn’s glands are the anterior lingual gland embedded in the substance of the tongue near the apex and the midline on the inferior surface of the tongue.

Multiple choice

The thyroid and parathyroid glands are derivatives of

  1. pharyngeal pouch

  2. oesphageal lining

  3. gills

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The thyroid and parathyroid glands develop from the pharyngeal pouches (specifically the 3rd and 4th pharyngeal pouches) during embryonic development. The thyroid arises from the floor of the pharynx (foramen cecum region), while parathyroids develop from the dorsal wings of the 3rd and 4th pouches. 'Oesphageal lining' is misspelled.

Multiple choice

Which of the following sets consists of endocrine glands only?

  1. Pituitary gland, Lachrymal gland, Tarsal gland

  2. Bowman’s gland, Lachrymal gland, Mammary gland

  3. Tarsal gland, Pineal gland, Mammary gland

  4. Pineal gland, Hypothalamus, Pituitary gland

  5. Hypothalamus, Bowman’s gland, Tarsal gland
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pineal gland, Hypothalamus, Pituitary gland: All are endocrine glands

Multiple choice

Which of the following glands are found in the skin of mammals?

  1. Cutaneous glands
  2. Ceruminous glands
  3. Sudorific glands
  4. Sebaceous glands

  1. 1, 2 and 3

  2. 1, 2 and 4

  3. 1, 3 and 4

  4. 2, 3 and 4

  5. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct answer. Ceruminous glands (wax glands) are found in the external ear cavity. They secrete ear wax (cerumen). Cutaneous glands are found in the skin of mammals. Their secretion helps lubricate the root of hair. Sudorific glands are found in the skin of mammals. They secrete sweat to cool the body. Sebaceous glands are found in the skin of mammals. They secrete oily substance to lubricate base of hair.  

Multiple choice

Which of the following statement is/are incorrect?

a. Parathyroid glands are four small glands that are embedded in the thyroid gland. b. The function of the parathoromone hormone is to regulate carbohydrate metabolism and blood pressure. c. Thymus gland is large in young children, but shrinks after puberty.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option as this statement is false. Parathormone controls calcium levels.

Multiple choice

Which of the following statements is/are false?

a. A gland which does not have a duct and secretes its products directly into the blood is called an endocrine gland. b. The cerebro spinal fluid protects the brain from the mechanical shocks. c. The reflexes which involve only the spinal cord are called as the cerebral reflexes.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option as this statement is false. The reflexes which involve only the spinal cord are called as the spinal reflexes, not the cerebral reflexes.